Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KMD callsign genealogy
Currently held by Derheimer, Kevin M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W4KMD's current licensee, walking backwards.
- Derheimer, Kevin MFLgranted 2017-01-13cancelled 2017-02-14
Successor callsigns
Callsigns held now by people who previously held W4KMD.
No current licensee on record previously held this callsign.